Originally Posted by mombasa123
The AutoCal feature using a BluRay player sounds great and just what I am looking for. Does it only work with LightSpace or can it work with ChromaPure or Calman (I see it says semi-auto but not clear what that entails).
AutoCAL (CalMAN feature) vs. Auto-Measurement capability (Ted's Disk via external utility feature), are two different capabilities.
AutoCAL (SpectraCAL has named it like that) is based to the fact the CalMAN connects with TV DDC (DirectDisplayControls); sometimes these controls are exact the same with the controls you see available to the normal user OSD menu; sometimes they are different; and based to guesswork, CalMAN is trying random RGB channel adjustments until the dE will be measured low....but a lot of times it will ignore to stay to a really low dE... and it will re-adjust again (increasing the dE error until it will decide that is accepted, so it will move to the next point.
AutoCAL for Sony/Samsung/Panasonic/Sharp with CalMAN (models which CalMAN controls the same user controls that normal menu's have) is just an automated ‘manual calibration’, this can very rarely provide a calibration as good as a direct manual user calibration (when the user know that he is doing). The 95% of AutoCAL users are performing manual cal after the AutoCAL, calling them as 'Hybrid'; so, it should not be called AutoCAL anymore since it requires manual adjustments.
When the supported TV by CalMAN has exact the same grayscale percentages with normal 11 or 21-Point Grayscale steps (equal spaced grayscale steps.....like 10/20/30 etc... or 5/10/15/20/25 etc.) then you can use a calibration disk (designed for CalMAN) displaying the exact same percentages patterns manually when they will be requested by CalMAN to display during an AutoCAL, but not in an automated way, since the pattern order can be different and the time CalMAN will stay to each same patch is not fixed.
You have tick @ CalMAN Source Setting the feature 'Pattern Change Prompts' so CalMAN will display a window dialog to inform the user what pattern he has to display.
So you can locate that pattern and display it... then pause that pattern, because CalMAN will stay for an unknown time to that pattern, measuring multiple times and trying different RGB balance combinations to reduce the RGB balance and gamma errors, when CalMAN will decide that its OK, a new window will appear to ask you display a different % of Gray Pattern, so you will un-pause the pattern video and display the one CalMAN will require.
But I don't recommend to anyone to perform any AutoCAL using a calibration disk (displaying the patterns manually) or AutoCAL generally.
Automated calibration via a ‘AutoCAL’ process is not an improvement over a good manual calibration, and often inferior.
The reason why manual cal it can provide better results its because you can count the linearity of your decisions between each point you adjust so later your grayscale ramp will look smoother. AutoCAL don't count this and if you perform 5x AutoCAL in the raw and check the values, you will see that its different per run, and your end results will be different each time. (looking a grayscale ramp you will see differences each time in gradation).
Also when you keep displaying the same pattern for a long time to the display, this will heat-it-up more quickly, some displays will enable an auto-dimming feature when they see the same patch (static) displayed for some seconds, so this will not help the AutoCAL decisions. Some other models will increase their luminance (some OLED) when you display a static patch, so this will not help also.
For that reason any of my disk patterns (for patch measurements) don't have more that 10 seconds time length per each patch, also between each patch, there is a 1.5 sec of black frame and 0.5 sec of pattern info announcement (so later the patch will not contain any text inside or outside the pattern window frame. Black frame before each pattern will help to prevent temp image retation for plasma or stabilization of panel temperature to OLED’s etc. (I thought about this 6 years ago and still works).
When you are using a multiple point of grayscale adjustment and you fix specific grayscale steps, this can undo the perfect calibration you have previously performed to nearby points (before or after the specific point you are currently calibration), for that reason its not recommended to stay and manually adjust each one grayscale step in real-time (like AutoCAL is doing or some users are manually performing also), its better idea to take a full grayscale sweep and then look the RGB balance and gamma charts, and decide what adjustments to perform to all RGB balance calibration controls at once to reduce the errors you see to the charts.
Calibrating with OSD menus also, it can affect the results to some displays, when you performing real-time autocal using the same patch displayed, and you can have difference results with OSD open or closed.
At the end of grayscale calibration, after you have verified that the measurements in charts are great, always re-check contrast/brightness settings and display a grayscale ramp pattern to check gradation.
There sometimes where large adjustments of calibration controls (or non-linear from point to point) it can add issues to gradation. Processing of the user adjustments combination can add issues, there displays where they have specific range of (+ -) adjustments you can apply without adding issues to real content or patterns.
Also there display's which are suffering with some issues related with a un-align of available calibration controls (10-Point RGB Balance) to the working effecting range of the signal, for example when you display a 50% Gray patch and you dial 50% Gray RGB balance, internally to the display it’s not changing the 50% of Gray but another level...for example 42% or 56% etc...for example.)
This makes the calibration more difficult and you will always introduce anomalies when you will finish a 10-Point RGB balance and you display a Grayscale Ramp, there will be visible issues there with strange color-shades.
There specific values (to each display) of contrast/brightness controls which are align better the calibration controls and it will be helpful to measure with 21-Point Grayscale patterns when you calibrate using the available 10-Point controls you have. Doing this will be able to spot better any anomaly and prevent issues.
Samsung's (like your display) generally have very good designed processing (16bit) of the changes you apply to the adjustments controls, so gradation stay 'smooth' from point-to-point of adjustments controls.
All above info are some tips to improve the end results (beyond charts) and expand also the calibration skills of a DIY calibration, so gaining experience from noticing something unusual, it will be easier to perform calibration to different/unknown display models next time with greater results.
Originally Posted by mombasa123
Also, for HDR 10 calibration i would need the DVS disk right?
Originally Posted by mombasa123
Edit : I guess the I am asking what package would people recommend to use with this disk : LightSpace/CalMan/ChromaPure with an Xrite i1 Pro meter. Ideally would like as much automation as possible for both SDR & HDR.
Leaning towards ChromaPure as CalMan Home Enthusiast is discontinued and no idea what the replacement Home package will be or when it will arrive.
NB my TV is Samsung Q9FN.
Any calibration software for manual calibration using normal display OSD menus can provide you the exact the same end results, since its a graphical presentation of what your meter is reading. So when you perform manual cal, whatever software you will use, the end results will be the same, the interface is different only.
There available free calibration solutions to check it out, like HCFR or LightSpace DPS.